From patchwork Thu Feb 23 06:59:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1746656 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=h2cYm5I5; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PMkRv0N52z240V for ; Thu, 23 Feb 2023 18:00:11 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pV5Zw-0007MQ-ID; Thu, 23 Feb 2023 01:59:44 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pV5Zu-0007Iy-MS for qemu-devel@nongnu.org; Thu, 23 Feb 2023 01:59:42 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pV5Zt-0007xw-3F for qemu-devel@nongnu.org; Thu, 23 Feb 2023 01:59:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677135580; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IqH5blnrQbgPbs8AVMt2lNSKBQgqB5uiGkqdFUOgQb8=; b=h2cYm5I5eEOBeSy7wTIs8UsFoLBDr1/7dwTIACA6FS3eg5L0olJaKPRmiIbytTNPxqb50D WlSEHMY13muA+J8B4FJpLz3RbFObsiRxWmQud4ISLx3cl8Uh+6bqHTukeDZON1kh5SIzGj tVZK+e6jY7soaYZ3RbZjz5nd+ZdwMIw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-267-W_jPolQLO4Sd3wWY3g9eLQ-1; Thu, 23 Feb 2023 01:59:37 -0500 X-MC-Unique: W_jPolQLO4Sd3wWY3g9eLQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id F221B85A588; Thu, 23 Feb 2023 06:59:36 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-177.pek2.redhat.com [10.72.13.177]) by smtp.corp.redhat.com (Postfix) with ESMTP id 142FE492C14; Thu, 23 Feb 2023 06:59:33 +0000 (UTC) From: Jason Wang To: mst@redhat.com, peterx@redhat.com Cc: qemu-devel@nongnu.org, eric.auger@redhat.com, viktor@daynix.com, lvivier@redhat.com, Jason Wang Subject: [PATCH V2 2/5] intel-iommu: fail DEVIOTLB_UNMAP without dt mode Date: Thu, 23 Feb 2023 14:59:21 +0800 Message-Id: <20230223065924.42503-3-jasowang@redhat.com> In-Reply-To: <20230223065924.42503-1-jasowang@redhat.com> References: <20230223065924.42503-1-jasowang@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Without dt mode, device IOTLB notifier won't work since guest won't send device IOTLB invalidation descriptor in this case. Let's fail early instead of misbehaving silently. Reviewed-by: Laurent Vivier Tested-by: Laurent Vivier Tested-by: Viktor Prutyanov Buglink: https://bugzilla.redhat.com/2156876 Signed-off-by: Jason Wang --- hw/i386/intel_iommu.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 0de3e31577..f006fa6031 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3179,6 +3179,7 @@ static int vtd_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu, { VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu); IntelIOMMUState *s = vtd_as->iommu_state; + X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(s); /* TODO: add support for VFIO and vhost users */ if (s->snoop_control) { @@ -3193,6 +3194,13 @@ static int vtd_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu, PCI_FUNC(vtd_as->devfn)); return -ENOTSUP; } + if (!x86_iommu->dt_supported && (new & IOMMU_NOTIFIER_DEVIOTLB_UNMAP)) { + error_setg_errno(errp, ENOTSUP, + "device %02x.%02x.%x requires device IOTLB mode", + pci_bus_num(vtd_as->bus), PCI_SLOT(vtd_as->devfn), + PCI_FUNC(vtd_as->devfn)); + return -ENOTSUP; + } /* Update per-address-space notifier flags */ vtd_as->notifier_flags = new;